Cylindrical sanding tool



. arch 3, 1970 A. J. TAA FE, JR 3,498,009

YLINDRIcAi. smnme TOOL Filed June 9, 1967 RN QN V Q @Twfi a 9 v) (HQ 5 N 1 mN mm H MN \N NM Rf m M Wm m .m d my {MB A United States Patent O- 3,498,009 CYLINDRICAL SANDING TOOL Alfred J. Taafe, Jr., Girard, Ohio, assignor of fifty percent to Alfred J. Taafe, Sr., Girard, Ohio Filed June 9, 1967, Ser. No. 645,046 Int. Cl. B24b 15/00 US. Cl. 51-393 4 Claims ABSTRACT OF THE DISCLOSURE A cylindrical sanding tool releasably mounted for rotary adjustment and replacement and attachable to a portable sanding device.

The principal object of the invention is the provision of an elongated cylindrical sanding tool and means for mounting the same on a portable sanding device so that the reciprocal motion of the device may be imparted thereto.

A further object of the invention is the provision of a cylindrical sanding tool wherein the mounting means therefor permit relative adjustment of the rotary tool abrasive surface while normally holding the same in fixed position.

A still further object of the invention is the provision of a cylindrical sanding tool having mounting means engageable on the base plate of a portable sanding device.

The cylindrical sanding tool disclosed herein comprises an improvement in the art relating to tools used in shaping sheet metal and the like, and particularly in automobile body shop operations. In automobile repair work the sheet metal panels are frequently leaded or filled with a plastic composition to repair damaged areas, and the re pair material then removed by a sanding operation to form a smooth unbroken area feather-edged into the adjoining sheet metal panel or the like. In repairing and replacing portions of many automobile fender and body parts, the complex curves initially formed in the sheet metal by sheet metal dies must be approximated in the patching material, and it has heretofore been a problem to achieve such smoothing of the patch material as to blend effectively with the remaining sheet metal panel. The present invention solves the problem by providing an elongated cylindrical sanding tool which may have either a rough or a fine abrasive surface as desired, and which may be reciprocated by a portable sanding device such as known in the art.

The cylindrical sanding tool may be of various diameters so that portions of it will match the particular curve of the body panel or fender panel being sanded, and the repair job thus made relatively easy. The cylindrical sanding tool is mounted on an elongated flat body member which has means thereon for operative attachment to the base plate of a portable sanding tool such as known in the art. Altemately, a simple plastic or wooden handle may be engaged in the body member and the device used manually. The principal point of novelty resides in the manner in which the elongated cylindrical sanding tool is adjustably mounted and held in desirable relation relative to such mounting means.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed.

The invention is illustrated in the accompanying drawing, wherein:

FIGURE 1 is a side elevation of the cylindrical sanding tool, with broken lines indicating a manual handle member installed thereon.

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FIGURE 2 is an end elevation on line 22 of FIG- URE 1.

FIGURE 3 is an enlarged cross-section on line 33 of FIGURE 1.

By referring to the drawing and FIGURE 1 in particular, it will be seen that the cylindrical sanding tool comprises an elongated cylindrical member having an abrasive coating 10. The cylindrical member has extending axial shafts 11 at its opposite ends engaged in journals 12 in a pair of spaced brackets 13 which are secured to mounting plates 14 and in perpendicular relation thereto. The mounting plates 14 are apertured centrally and each of the brackets 13 has a bolt 15 attached thereto and extending longitudinally thereof and through the apertured plates 14 and through apertures in an elongated flat body member 16. The elongated flat body member 16 has sandpaper receiving clamps 17 at its opposite ends and on the upper surface thereof, arranged to receive the inturned ends of a sheet of sandpaper positioned longitudinally of the bottom of the member 16 so as to clamp the same. Thus, when the brackets 13 are removed from the position illustrated in FIGURE 1 of the drawing, the elongated body member 16 may be used as a sanding device for fiat surfaces, and when the cylindrical member with its abrasive surface 10 is mounted thereto by the brackets 13 the device becomes a convenient sanding tool for curved surfaces. Wing nuts 18 are normally positioned on the bolt 15 and against the upper surface of the elongated body member 16, and thus hold the brackets 13 and hence the curved sanding tool in assembly, as shown. Midway between the bolts 15 a transverse flange 19 is positioned on the upper surface of the elongated body member 16 and with a portion thereof in spaced relation to said body member 16. A pair of longitudinally extending flanges 20 areformed preferably integrally therewith and extend along the upper surface of the body member 16 and terminate at an inverted U-shaped clamp 21 which has a web portion 22 spaced by depending arm portions 23 and the area between the arm portions 23 is occupied by a pressure plate 24, the ends of which are bifurcated and engage around the arms 23. A bolt positioned through the web portion 22 of the inverted U-shaped clamp 21 may be manually moved to move the pressure plate 24 downwardly.

By referring now to FIGURE 1 of the drawing, it will be seen that a broken line illustration of a handle having a flat plate on its lower surface has been engaged beneath flange 19 and the pressure plate 24 of the U-shaped clamp 21 by having been positioned between the flanges 20 moved toward the clamp 21 and then back into position with one end of the plate beneath the flange 19, whereupon the pressure plate 24 has been moved downwardly by the bolt 25 so as to secure the handle to the upper surface of the elongated flat body member 16.

It will occur to those skilled in the art that the handle and its plate can be removed and that a portable sanding tool such as for example, that shown in Patent No. 2,957,- 282 can be substituted therefor, and that the device may then be operated in connection with the portable sanding tool and the necessary motion imparted to the device thereby.

Referring again to FIGURES 2 and 3 of the drawing, it will be seen that the left-hand bracket 13 is provided with a spring-urged shaft 26 which normally engages one end of the elongated cylindrical member having the abrasive surface 10 and thereby prevents the same from rotating relative to its position between the brackets 13. The end of the elongated cylindrical member is seen in enlarged detail in FIGURE 3 of the drawing, and by referring thereto it will be seen that the abrasive surface 10 is supported on a cylindrical body 27 and that the same is provided with a plurality of openings 28 defined by an 3 apertured end plate 30 secured to the member 27. The arrangement is such that on movement of the shaft 26 in one direction, the elongated cylindrical body 27 may be revolved so as to bring a new'surface of the abrasive 10 into desired position.

It will thus be seen that a cylindrical sanding tool has been disclosed which may be advantageously used either manually or in connection with a portable sanding device and in desirably smoothing surfaces on sheet metal body panels that have been repaired with lead and/or plastic material, as customary in the auto body repair field.

It will thus be seen that the cylindrical sanding tool disclosed herein meets the several objects of the invention, and having thus described my invention, What I claim is:

1. A cylindrical sanding tool consisting of an elongated cylindrical body member having a cylindrical abrasive coating thereon, brackets having pivots engageable with the ends of said elongated cylindrical body member for holding the same in rotatable relation therebetween, an elongated flat body member, fasteners detachably securing said brackets to said elongated flat body member in perpendicular relation thereto and spaced with respect to one another, means on said elongated flat body member for detachably receiving and holding a device for imparting reciprocal motion thereto and means on one of said brackets movable from a first position engaging said cylindrical body member to a second position spaced from said cylindrical body member for holding the same in adjustable relation thereto.

2. The cylindrical sanding tool set forth in claim 1 and wherein said cylindrical abrasive coating is a separate tubular abrasive member.

3. The cylindrical sanding tool set forth in claim 1 and wherein said means on said elongated flat body member for detachably receiving a device for imparting reciprocal motion thereto comprises a transversely positioned Z- shaped flange and a clamping device arranged and spaced with respect thereto so as to engage the opposite ends of a flat plat on which said device for imparting reciprocal motion may be mounted.

4. The cylindrical sanding tool set forth in claim 1 and wherein the means movable from a first position engaging said cylindrical body member to a second position spaced from said cylindrical body member includes a spring urged shaft positioned in an aperture in one of said brackets and engageable with any one of a plurality of apertures in one end of said elongated cylindrical body member for holding the same in non-rotative position relative to said brackets.

References Cited UNITED STATES PATENTS 219,391 9/1879 Deal 51-205 220,914 10/ 1 879 Currier 5 1205 1,839,557 1/1932 Hilwig 51389 2,599,009 6/1952 Palotsee S1345 2,680,3 34 6/1954- Howard 5 l393 3,120,084 2/1964 Phillips 51-205 0 OTHELL M. SIMPSON, Primary Examiner 

